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  • ugur23 commented on HOBBY TO MAKE's instructable HOW TO REPAIR LAPTOP BATTERY ?1 year ago
    HOW TO REPAIR LAPTOP BATTERY ?

    Circuits never die. It locks itself and sets itself "Permanent Failure" flag then blows the fuse when it dedected some issues,like when 1 cell died in battery. one died cell will make battery extremely unbalanced , it will heat pretty much then battery will lock itselfSame thing can happen when battery is over discharged. Or when you overload the battery. It will blow fuse , then battery will enter pf mode. And last warnings ; the battery can die even when upgrading firmware of battery (especially lenovo / IBM batteries with custom firmware ).If you have a Lenovo/IBM battery. Dont try this. It will OK to disconnect cells . but when you reconnect new cells , it will enter pf mode and blow the fuse when you triggered a power reset of circuit / smb controller.And when you trying ...

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    Circuits never die. It locks itself and sets itself "Permanent Failure" flag then blows the fuse when it dedected some issues,like when 1 cell died in battery. one died cell will make battery extremely unbalanced , it will heat pretty much then battery will lock itselfSame thing can happen when battery is over discharged. Or when you overload the battery. It will blow fuse , then battery will enter pf mode. And last warnings ; the battery can die even when upgrading firmware of battery (especially lenovo / IBM batteries with custom firmware ).If you have a Lenovo/IBM battery. Dont try this. It will OK to disconnect cells . but when you reconnect new cells , it will enter pf mode and blow the fuse when you triggered a power reset of circuit / smb controller.And when you trying to recell a battery , first disconnect GND at end of the cells , when you builded all cells , connect GND last. Because removing gnd will immediately power down battery controller. If you disconnect cells randomly , battery will dedect imbalanced cells and it will enter the permanent failure mode.(And if you have a battery with a external eeprom (like bq2040/2060) backup eeprom first in case battery gets locked , just rewrite backup to battery then powercycle the circuit)Sorry for long post and bad english. These are all my information about SBS 1.0 and 1.1 compatible batteries.

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